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A gene is the DNA sequences encoding a protein():( )

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TheN terminal of core histone is necessary to form 30nm fiber of chromotin.( )

The diameter of beads-on-a-string structure of nucleosome is 30nm, to which linker DNA is connected to form 30nm fiber.( )

The main difference of chromosome and chromatin is the compactness, while their chemical composition is exactly the same.( )

Four kinds of histones in nucleosome core particle as well as H1 is highly conserved, without species and tissue specificity.( )